my Toyota Corolla E210 (2019-2024) struggles to start, what could it be?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the negative terminal of the battery to prevent electrical shock.

2. Battery Inspection and Replacement

1. Inspect the battery terminals for corrosion and clean as necessary using a wire brush.
2. If the battery is weak or faulty, remove it:
   • Loosen the bolts on the battery terminals (positive first, then negative).
   • Remove the battery from the vehicle.
3. Install a new battery:
   • Place the new battery in the tray and secure it with the bracket.
   • Connect the positive terminal first, followed by the negative terminal.
   • Tighten the connections securely.

3. Starter Motor Inspection and Replacement

1. Locate the starter motor beneath the vehicle or in the engine compartment.
2. Disconnect the wiring harness from the starter motor.
3. Remove the mounting bolts using a socket set.
4. Carefully pull the starter motor out of its mounting.
5. Install the new starter motor:
   • Position the starter motor, align it with the mounting holes, and secure it with the bolts (torque to manufacturer specifications).
   • Reconnect the wiring harness.

4. Ignition Switch Inspection

1. Access the ignition switch by removing the steering column cover.
2. Check for any signs of wear or damage.
3. If defective, remove the ignition switch:
   • Disconnect the wiring harness.
   • Unscrew the mounting screws.
4. Install the new ignition switch:
   • Position it in place, secure with screws, and reconnect the wiring harness.